#pragma once

#include <iostream>
#include <string>
#include <sys/types.h>
#include <sys/socket.h>
#include <netinet/in.h>
#include <sys/wait.h>
#include <arpa/inet.h>
#include <pthread.h>
#include <signal.h>
#include "log.hpp"

enum{
    SocketError = 1,
    BindError,
    ListenError
};

const int backlog = 10;

class Sock
{
public:
    Sock()
    {}

    void Socket()
    {
        sockfd_ = socket(AF_INET, SOCK_STREAM, 0);
        if(sockfd_ < 0)
        {
            lg(Fatal, "socket error! errno:%d errstr:%s", errno, strerror(errno));
            exit(SocketError);
        }
        int opt = 1;
        setsockopt(sockfd_, SOL_SOCKET, SO_REUSEADDR, &opt, sizeof(opt));
    }

    void Bind(uint16_t port)
    {
        struct sockaddr_in local;
        memset(&local, 0, sizeof(local));
        local.sin_family = AF_INET;
        local.sin_port = htons(port);
        local.sin_addr.s_addr = INADDR_ANY;

        if(bind(sockfd_, (struct sockaddr*)&local, sizeof(local)) < 0)
        {
            lg(Fatal, "bind error! errno:%d errstr:%s", errno, strerror(errno));
            exit(BindError);
        }
    }

    void Listen()
    {
        if(listen(sockfd_, backlog) < 0)
        {
            lg(Fatal, "listen error, errno:%d, errorstring:%s", errno, strerror(errno));
            exit(ListenError);
        }
    }

    int Accept(std::string *clientip, uint16_t *clientport)
    {
        struct sockaddr_in peer;
        socklen_t len = sizeof(peer);
        int newfd = accept(sockfd_, (struct sockaddr*)&peer, &len);
        if(newfd < 0)
        {
            lg(Warning , "listen error, errno:%d, errorstring:%s", errno, strerror(errno));
            return -1;
        }
        char ipstr[64];
        inet_ntop(AF_INET, &(peer.sin_addr), ipstr, sizeof(ipstr));
        *clientip = ipstr;
        *clientport = ntohs(peer.sin_port);
        
        return newfd;
    }

    bool Connect(const std::string& serverip, const uint16_t serverport)
    {
        struct sockaddr_in server;
        memset(&server, 0, sizeof(server));
        server.sin_family = AF_INET;
        server.sin_port = htons(serverport);
        inet_pton(AF_INET, serverip.c_str(), &(server.sin_addr));

        int n = connect(sockfd_, (struct sockaddr*)&server, sizeof(server));
        if(n < 0)
        {
            lg(Warning , "connect error, errno:%d, errorstring:%s", errno, strerror(errno));
            return false;
        }
        
        return true;
    }

    void Close()
    {
        close(sockfd_);
    }

    int Fd()
    {
        return sockfd_;
    }

    ~Sock()
    {}
private:
    int sockfd_;
};